Questions: A TV news reporter is told by several viewers that they seem to have a mass growing out of their neck as their neck has changed appearance over the last several months. The reporter reviews films and sees what they are saying in their emails. They go to see their physician who feels the thyroid and believes there is a mass there. What is the next step? Ultrasound of the thyroid gland X-ray of the neck MRI of the head Radioactive iodine uptake scan

The answer is the first one: Ultrasound of the thyroid gland.

Explanation for each option:

1. Ultrasound of the thyroid gland: This is the correct next step. An ultrasound is a non-invasive imaging technique that is commonly used to evaluate thyroid nodules or masses. It helps in determining the size, composition (solid or cystic), and other characteristics of the thyroid mass. It is typically the first imaging test performed when a thyroid mass is suspected.

2. X-ray of the neck: This is not the appropriate next step for evaluating a thyroid mass. X-rays are not effective in visualizing soft tissue structures like the thyroid gland and are not typically used for this purpose.

3. MRI of the head: An MRI is not the first-line imaging test for a thyroid mass. While it provides detailed images of soft tissues, it is more expensive and not necessary for initial evaluation of a thyroid mass.

4. Radioactive iodine uptake scan: This test is used to assess the function of the thyroid gland and is more relevant for evaluating hyperthyroidism or thyroid function rather than the structural characteristics of a thyroid mass.

In summary, the most appropriate next step for evaluating a suspected thyroid mass is an ultrasound of the thyroid gland.